Will he come back to school tomorrow? I hope _____.

---How many eggs are still there in the fridge, Bill? --_____.

---Which of the three optional courses did you like best, Joe? ---To tell you the truth, I didn’t like _______ of them.

Clothing made of man-made materials has advantage over _________ made of natural ones like cotton, wool or silk.

---Shall I sit at this end of the boat, or that end? ---You may sit at ___ end if you keep still.